“1:20万区域化探异常筛选与查证方法技术研究”为地矿部“八五”科技攻关项目。本项研究在总结国内外经验的基础上,经过对多个景观区、多个方面的研究,提出了一套新的异常筛选评价方法和思路:1.从区域入手,研究不同级次地球化学异常特征(地球化学省—区域异常或地球化学区—局部异常)和成矿地球化学环境与不同级次成矿作用的联系,把局部异常筛选置于区域之中。研究表明,地球原始组成物质的不均一性是矿化集中区和大型、超大型矿床形成的化学基础,区域元素分带与成矿系列密切相关,具有套合模式的局部异常(如位于地球化学省、区、带中的异常)往往比孤立出现的局部异常更有找矿前景。这种 “1: 200000 regional geochemical anomaly screening and verification methods of technical research ” for the Department of Geology “eight five ” scientific and technological projects. Based on the summarization of domestic and foreign experiences, this study presents a new set of abnormal screening evaluation methods and ideas through the study of multiple landscapes and areas: 1. Starting from the region, studying different levels of geochemistry Abnormal features (geochemical province - regional anomalies or geochemical zones - local anomalies) and the relationship between metallogenetic geochemical environment and mineralization at different levels, local anomaly screening is placed in the region. The results show that the inhomogeneity of the original material composition of the earth is the chemical basis for the formation of mineralized areas and large and super-large deposits. The regional elemental zonation is closely related to the metallogenic series, and the local anomalies with nested pattern (such as geochemical Provinces, districts and anomalies in the belt) tend to be more prospecting for prospect than the isolated anomalies. This